Yarisaa Gasshuku ni Otoko wa Boku Hitori

Yuuta is part of the Surfing and Snowboarding Club, a club notorious at his college for being one people only really join to have sex at. Despite being part of the club, he's a virgin, but he hopes to lose it at the club's next planned getaway... However, just before the day of the trip, every other guy in the club gets sick besides him, and he's left as the only guy in a group filled with horny girls!

(Source: Irodori Comics)